Two 12-year-olds (Emma Roberts and pop singer JoJo) get more than they bargained for when they discover sassy mermaid Aquamarine (Sara Paxton) lolling at the bottom of their beach club's pool, having come ashore to search for true love. Before you can say "fish out of water," the finned beauty develops a crush on a boy who works at the club and recruits the girls to help her capture his heart in this family comedy directed by Elizabeth Allen.